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| 5.44 MB | Adobe PDF |
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Abstract(s)
A automação de trabalhos está cada vez mais presente na sociedade. Tarefas que antigamente eram realizadas de forma manual são atualmente realizadas com apenas alguns cliques, ou mesmo de forma autónoma. Uma aplicação possível para a automação é a das barreiras presentes nas passagens de nível, como é o caso do mecanismo de barreira XBarrier 100, criado pela Efacec. Nenhum sistema está completamente imune a falhar e esta circunstância é aplicável ao XBarrier 100, que é comandado por um controlador externo situado nas proximidades da passagem de nível. A fiabilidade deste sistema é um dos aspetos mais importantes que devem ser tidos em conta no desempenho da sua função. Mesmo em caso de falha, o seu funcionamento deve oferecer a maior segurança possível. Desta forma, procura-se melhorar as suas funções de controlo e automação. Para isso, pretende-se incorporar ao sistema um novo controlador interno que faça parte das funções de operação que atualmente executa o controlador externo, que inclua novas funcionalidades, que aporte um maior grau de automatização e tudo isso com garantia de segurança e fiabilidade. Para além disso, e consequentemente, é necessária a intercomunicação do novo controlador interno com o controlador externo atual e também com os restantes dispositivos do sistema. Tendo em conta o problema descrito, a solução é projetada e desenvolvida de forma a obter um sistema seguro antifalhas, com a adequada escolha de um PLC que garanta uma série de condições específicas de segurança e, posteriormente, a sua programação com diversas funcionalidades e requisitos selecionados pela empresa Efacec. Além disso, foi escolhido e configurado um protocolo de comunicação industrial capaz de intercomunicar o novo PLC interno, com o PLC externo atual e outros dispositivos do sistema. Em suma, é implementada uma solução de controlo interno de barreira para otimizar as funcionalidades de automação e segurança do sistema XBarrier 100 atual.
Automation is becoming more and more present in society. Tasks that used to be manual are now done with just a few clicks or even autonomously. A possible automation application is the level crossing barriers, such as the XBarrier 100 barrier mechanism created by Efacec. No system is completely immune to failure and this circumstance is also applicable to the XBarrier 100, which is controlled by an external controller located near the level crossing. The reliability of this system is one of the most important aspects that has to be taken into account when performing its function. Even in case of failure, its operation must offer the greatest possible security. It is thus always desirable to improve its control and automation functions. For that purpose, a new internal controller shall be incorporated in the system in order to perform some operating functions that external controller currently performs, and also new features, globally bringing a greater degree of automation with guaranteed security and reliability. In addition, and consequently, intercommunication between new internal controller and current external controller and also other devices in the system shall be ensured. The solution is designed and developed, taking into account the described problem, which aim is a safe, fail-safe system, with the appropriate choice of a PLC, that guarantees a series of specific safety conditions. Subsequently, its programming with various features and requirements selected by the Efacec company is performed. Besides that, an industrial communication protocol capable of ensuring intercommunication between new internal PLC, the current external PLC and other system devices was chosen and configured. In short, an internal barrier control solution is implemented to optimize the automation and safety features of the current XBarrier 100 system.
Automation is becoming more and more present in society. Tasks that used to be manual are now done with just a few clicks or even autonomously. A possible automation application is the level crossing barriers, such as the XBarrier 100 barrier mechanism created by Efacec. No system is completely immune to failure and this circumstance is also applicable to the XBarrier 100, which is controlled by an external controller located near the level crossing. The reliability of this system is one of the most important aspects that has to be taken into account when performing its function. Even in case of failure, its operation must offer the greatest possible security. It is thus always desirable to improve its control and automation functions. For that purpose, a new internal controller shall be incorporated in the system in order to perform some operating functions that external controller currently performs, and also new features, globally bringing a greater degree of automation with guaranteed security and reliability. In addition, and consequently, intercommunication between new internal controller and current external controller and also other devices in the system shall be ensured. The solution is designed and developed, taking into account the described problem, which aim is a safe, fail-safe system, with the appropriate choice of a PLC, that guarantees a series of specific safety conditions. Subsequently, its programming with various features and requirements selected by the Efacec company is performed. Besides that, an industrial communication protocol capable of ensuring intercommunication between new internal PLC, the current external PLC and other system devices was chosen and configured. In short, an internal barrier control solution is implemented to optimize the automation and safety features of the current XBarrier 100 system.
Description
Keywords
Automação Controlo de barreira Passagem de nível Segurança funcional Automation Barrier control Level Crossing Security